Adjustable band-saw guide



E. G. UFVENDAHL, SR.

ADJUSTABLE BAND SAW GUiDE.

APPLICATION HLED IUNE'Q, 1921.

il 32956@ Patented im. 17,1922.

Patented @et ll', i222.

unirse :ERIC GUSTAF LIFVENDAHL, SR., OF ANAGORTES, WASHINGTON.

ADJUSTABLE BAND-SAW GUIDE.

Application led June 9, 1921.

Be it known that I, ERICl GUsTAr LrrvnN- DAHL, Sr., a citizen ofthe United States of America, residing at Anacortes, in the county of Skagit and State of Vashington, have invented certain new and useful Im,- provements in Adjustable Band-Saw Guides, of which the following is a specification.

The object of the present invention is to improve the construction of saw guides, and to provide an adjustable guide particularly useful for the band-saws of horizontal band resawing machines.

With this and other objects in view, the present invention consists in the novel form, combination andarrangement of parts hereinafter more fully described, shown in (the accompanying drawings and claimed,

In they drawings wherein likev reference characters refer to corresponding parts throughout the several views,

Figure 1 is a detail sectional View taken longitudinally through saw guide and transversely of the saw band,

Figure 2 is a side elevational v iew of the upper guide member of the saw guide shown in Figure 1,

Figure 3 is a top plan view thereof, and

Figure t is a vertical sectional view taken upon line ITV-IV of Figure 2.

Referring more in detail to the several views, the present invention mainly resides in improving the construction of the upper guide member of the saw guide, which upper member is generally denoted by the numeral 5 and which may be associated with a support 6 having a vertical portion 7 located at one side of the band saw 8 and arranged above the plane of the latter, the upper guide member 5 having one end fitted against and` adjustably secured to the `vertimll portions 7 of the support and movable upwardly and downwardly toward and from the band saw. This is accomplished by providing the guide member 5 with a vertical rib 9 for slidable reception within a groove 10 of the vertical portion 7, a screw 11 being passed through a vertical elongated slot 12 of the portion 7 and being threaded into the adjacent end of the guide member 5. In guides of the present kind, a lower guide member 13 is usually connected with the bottom of the support 6 and has a portion 111 extending beneath the saw 8, which portion may be provided with adjustable saw supporting screw l5 if desired,

Serial No. 476,219.

The construction thus far described is substantially the same as that of saw guides heretofore employed with the exception of the provision of the rib 9 and groove 10, which elements are provided to hold the upper guide member 5 against lateral tilting movements as well as to assist the screw 11 in bracing said guide member against lateral strains which is particularly necessary when said guide member is formed of a block of cast iron or other metal as in the present device. v

As above stated, the -upper guide member 5y includes a cast iron body and this body is rabetted at one side as at 16, a brass guide pla-te 17 being held in this cut out or rabbetted portion by means of suitable screws 18 extending through vertical elongated slots 19 in the guide plate or blade 17 and threaded into the body of the upper guide member, the slots 19 providing for vertical adjustment of the plate 17 the desired distance below the bottom surface of the body. Y,

The body of the upper guide member is provided with a groove inclined to the vertical as at 2O at its forward end, and a hard wood guide pin 21 is slidably disposed in this groove so as to engage at its lower end with the adjacent surface of the saw band 8 near the toothed edge of the latter. A metal plate 22 is disposed within the groove 20 beside the guide pin 21 and its upper end portion 23 extends at right angles so as to rest upon the upper surface of the body of the guide member 5, a screw 24E being threade ed into the body of the guide member' and extending through a transversely elongated slot 25 in the end/23 so as to guide the plate 22 for transverse movements. A set screw 26 is threaded through one side of the guide member so as to have its inner end bear upon the plate 22 and it will be seen that by adjusting the set screw 26, the guide pin 21 will be effectively held against movement in: the groove 20 with the lower end of said guide pin the required distance below the bottom surface of the guide member body. The object of the plate 22 is to provide a iiat metal bearing for engaging the greater portion of one side of the pin 21 and to receive the direct contact of the screw 26 so that the guide pin is effectively held against accidental movement in the body and the guide in is protected from being damaged by saidy screw 26. i

A vertical opening 27 is (provided .vertically`r through the body of lthe guide member 5 rearwardly ot' the groove 20, andanother hard Woodfguide/pin QSis slidably dispose; therethrough, the guide pin 28 being similarly associated with a set screw 26 .land -a metallic plate 22 with one flanged upper' end 23 adjustably connected to the body by means of a sere7 Qlpassing tl'irough aslot 25m said end 23.

ln. the Ause oi: 4the device, the 'tvvo hard Wood guide pins'Zl and are placed lin such Aposition that `they barely touch the saw, the pin 28 being` near the Abaokoi Athe saw and the pin 2l beirip,v near the toothed edge of the rlatter, lboth guide pins beingv even -witl the bottom orthe projectinggedge ofthe guideblade '17 Which projects slightly 'belowfthe bottom surface of "the body ofthe guidemember 5. The central portionfof the saw is thus left free Where the least pressure or #wear is had. Thus, the guide Ipins are only at spacedpoints upon the'savvband and las soon as ythey Wear), lthey can 4be readily lowered as necessary indepently of any-other Apart-of the upper guide member or of the entireguide. 'f The object of the brass guide blade 17 -is ythat it is 'of vsuch metal Aand so arranged-that should fthe -saW lback-up or be `forced by the timbers, Ysaid Iblade will not break or dull `the saw. n

It is ybelieved "hat the construction .and manner of use as Well as -the advantages of the present invention will be readilyfunderstood and appreciated from 'the foregoing description.

Minor changes may be made Without deybody member with hard Wood through, :and

toone sideol thebody and adjustable vertioally relative to the latter `so as to project beloivthebottom surface'of said'body.

2. In `a 'band Saw guide, .an iippergriide mlember having means for attaching the same to a support Kfor vertical adjustment relative to said support and including a uide pins adjustable substantially vertiea ly there-,i

-a 'vertically ladjustable guide blade -carried iby the body member alongside of said guide pins.

3. In a iband saw lguidefan upper .guide member khaving means for attaching the same to a .support or vertical -adjustment relative fto said support `:and includinga body member with .lhard Wood guide Ipins 'adjustable substantially vertically therefthrough, anda vertically adjustable guide blade carried fby 'the body member alongside'o'f said guide .pinsysaidbody being rabbetted along fone side, land said :guide blade being positioned Within said frabbettedjporition -o'f "the fbody.

*ln testimony whereof 'I afiixmy signature.

BMC 'JGUS'EAF LEFVENDA'EL, Sr. Y 

